#include<stdio.h>
#include<sys/types.h>
#include<unistd.h>

int main()
{
   pid_t id=fork();
   if(id==0)
   {
      //child
      int count = 5;
      while(count)
      {
         printf("我是子进程，我正在运行：%d\n",count);
         sleep(1);
         count--;
      }
   }
   else 
   {
      while(1)
      {
         printf("我是父进程，我正在运行...\n");
         sleep(1);
      }
   }
   //printf("我是一个进程，pid:%d\n",getpid());

   ////int x;
   ////scanf("%d",&x);
   //while(1)
   //{
   //   printf("hello lcp!\n");
   //}
   return 0;
}
